Answer:
<h2>Carbon dioxide and ammonia </h2>
Explanation:
When Urea  reacts with water , it gives carbon dioxide and ammonia.
 
        
             
        
        
        
Diet high in fiber, low in refined carbs, high in lean protein, low in cholesterol and saturated fat with moderate excercise
        
                    
             
        
        
        
 Answer:
--> The structure is a long tube which stores sperm is called EPIDIDYMIS.
--> The gland that produces fluid to protect sperm is called PROSTATE GLAND.
Explanation:
The vertebrate reproductive systems consists mainly of gonads and associated reproductive ducts and glands. In the male reproductive system, the gonads are the testes which produces spermatozoa or sperms. The two testes are present in the lower part of the abdomen which descends into a sac outside the body, called the scrotum at puberty. Production of sperms and male sex hormone, testosterone occurs in the testes at puberty. EPIDIDYMIS is a long coiled tube, about 6m long) that lies outside each testis. It functions to store sperm produced from the testes.
One of the accessory glands associated with the sperm ducts is the PROSTATE GLAND. They add secretions known as seminal fluid to the sperm which aid it's mobility, provide nutrients and protects it by neutralising the acidity produced by any urine present in the urethra.
 
        
             
        
        
        
Answer:
Some things to consider: safety, Money, and specific muscles you want to work.
Explanation:
Free weights cost less money. People have used free weights on a weight bench and have not used a spotter. The free weights have fallen on them and killed them. A universal machine is more expensive. You can not drop a universal machine on yourself. The machine's aslo require little to no maintenance. A machine will basically always hit certain muscles, not due to you but down to how the machine is made. However free weights allow you to hit a larger variety of muscles as it's not isolated. 
 
        
                    
             
        
        
        
in the tiny air sacs (alveoli) at the end of the bronchial tubes.